Automobile jack-truck.



R. MCCALMONT.

AUTOMOBILE )ACK TRUCK.

APPLICATION FILED APR. I5, |912.

l il 34,23 L Patented Apr. 6, 1915.

5 SHEETS-SHEET 1.

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R. MCCALMUNT.

AUTOMOBILE JACK TRUCK.

APPLICATION FILED APR. I5l 1912- Patented Apr. 6, 1915.

5 SHEETS-SHEET 2.

1HE NQRRIS PETERS C0.. PHOrO-LIIHGn WASHINGTON. D. C.

R. MCCALNIONT.

AUTOMOBILE JACK TRUCK.

APPLICATION FILED APK. I5, 1912.

1,1 34,21 1 Patented Apr. 6, 1915.

5 SHEETS-SHEET 3.

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THE NoRRIs PETERS ca PHOm-LlrHu.,

R. MCCALMONT.

AUTOMOBILE JACK TRUCK. AEPLIcATloN F1Ln AP11.15, 1912.

` 1,134,21 1 Patented Apr. 6,1915.

R. MCCALMONT.

AUTOMOBILE JACK TRUCK.

APPLICATION FILED APILIS, 19I2.

1,1 34,21 L Patented Apr. 6, 1915.

5 SHEETS-SHEET 5.

YHE NORR/s PETERS :La PHOTGYLIrl-lo.. WASHINGTON. D c.

NTEU STATES @NEEN-T @EMME ROBERT IVICCALMONT, OF FRANKLIN, PENNSYLVANIA.

AUTOMOBILE' JACK-TRUCK.

Application led April 15, 1912.

T0 all whom t may concern Be it known that I, ROBERT MCCALMONT, acitizen of the United States, residing at Franklin, in the county ofVenango and State of Pennsylvania, have invented certain new and usefulImprovements in Automobile Jack-Trucks, of which the following is aspecification.

My invention relates to jack trucks for automobiles or other vehicles,and the invention has for its object to provide a device of thischaracter of novel form and construction which shall be simple, strongand durable, cheaply manufactured and which can be readily applied tothe vehicle axle to raise and stably support the same in such mannerthat the vehicle may, if desired, be moved from place to place.

The invention is illustrated in a preferred embodiment, and in amodification thereof, in the accompanying drawings, wherein- Figure 1 isa plan view of one form of jack truck, the vehicle axle and wheels beingshown in dotted lines. Fig. 2 is an end view of the same. Fig. 3 alongitudinal sectional view showing the device in the position which itassumes when first applied to the vehicle axle. Fig. 4l is a similarview showing the device in its operative or supporting position. Figs. 5and 6 are sectional views, on an enlarged scale, taken on respectivelylines 5 5 and 6-6 of Fig. 1, looking in the direction of the arrows.Fig. 7 is a plan view of a modified form of device. Fig. 8 is asectional view taken on line 8-8 of Fig. 7, looking in the direction ofthe arrows. Fig. 9 is a plan view of another modification. Fig. 10 is asectional view taken on line 10-10 of Fig. 9, looking in the directionof the arrows; Fig. 11, a similar view taken on line 11-11 of Fig. 9.Fig. 12 is a plan view of another modification; Fig. 13 is a sectionalview taken on line 13-13 of Fig. 12, looking in the direction of thearrows, and Fig. 11 is a similar view taken on line 14T-14 of Fig. i3.

Like characters of reference indicate like parts in the several figuresof the drawings.

Referring first to Figs. 1 to 6 inclusive, the jack truck here shown iscomposed of a truck or sustaining member and of a rocking memberrevolubly mounted in bearings on the truck and provided with axlesupports adapted to engage the opposite ends of a vehicle axle.

The truck is made up of a preferably tri- Specicaton of Letters Patent.

Patented Apr. 6, 1915.

Serial No. 691,019.

angular framework consisting of the bent piece of tubing 10, the unions11, 11 which provide bearings for the rocking member, as will behereinafter described, the lengths of tubing 12, 12, and a connectingbar 13, also of tubing, which is secured to the members 12, 12 by meansof the unions 14, 14. This frame work is provided at each corner withwheels or rollers, preferably with the c asters 15, which are offamiliar construction.

The rocking or jack member of the device 1s composed of a cross piece,two axle supports and a lever. In order to adjust the device todifferent widths, the cross piece is preferably made up of a length oftubing 1G, to the ends of which are secured, by means of the bolts 17held in place by Cotter pins 18, a pair of sleeves 19 threaded at theirinner ends for the locking nuts 20. The member 16 has a series ofperfor-ations 21 for the bolts 17 at each end. By this arrangement theeffective width of the rocking member may be varied. The sleeves 19extend through the unions 11 and are provided at their outer ends withstandards 22 which are internally threaded to receive the threaded endsof the axle supports 23. The latter are kept at the proper adjustment bylocking nuts 24.

The lever for operating' the rocking member is preferably, for the sakeof convenience, made in two parts, one of which parts is in the form ofa socket attached to the cross piece of the rocking member, the otherpart fitting into this socket. 25 designates a T union secured to themember 16 at its middle, the projecting member 26 of which forms asocket for the extension piece 27. Preferably the cross piece 13 of thetruck frame is formed with a bend 2S into which the socket 26 iits whenthe rocking member is turned to its operative position.

In order to hold the rocking member in operative position and prevent itfrom dumping the load when the vehicle supported is moved from place toplace, I provide a lock which holds the rocking member' in substantiallyrigid relation with the truck frame. This lock may consist of a slidingcollar 29 on the socket member 26 provided with a hook 30 which isadapted to extend under the curved portion 28 of the frame member 13.

In order to limit the movement of the rocking member in the oppositedirection, 1

preferably provide a stop consisting, in the construction shown, of apin 31 in the union 11 which extends into a slot 32 in the sleeve .19.There may, of course, be one of these stops at each end of therockingmember.

The device thus constructed is operated as follows: It is placed underthe axle of the vehicle with the rocking member in the position shown inFig. 3. Pressure on the extension piece 27 turns the rocking member tothe position shown in Fig. 4. This raises the axle and lifts the wheelsout of contact with the ground. In the drawings 33 designates the axleand 34 the wheels. To lock the parts in the operative position, thecollar 29 is slid along the socket 26 until the hook 30 engages thecross piece 13 of the frame. The extension piece 27 may be removed fromthe socket, so that the jack truck projects little, if any, beyond theend of the vehicle. It will be understood that it is the intention toemploy the jack trucks of my invention in pairs, using'one for the frontaxle and one for the'rear axle. When a vehicle is thus supported, it maybe pushed from place to place.

In Figs. 7 and 8 I have shown a modied form of the invention, in whichthe weight of the load, instead of being carried by the truck, is borneby the rocking member which comes into contact with the ground, thepurpose of the truck being simply to hold the rocking member in itsupright position. The truck in this case consists of a frame work madeup of the bent pieces of tubing 35 and 36 connected by the unions 37,37, which latter, as in the case of the other form of device, providebearings for the rocking member. The framework 35, 36 is provided ateach end with a roller, preferably with the caster 38. The rockingmember is composed of the length of tubing 39, the sleeves 40, providedwith the standards 41, which are internally threaded to receive thethreaded ends of the axle supports 42. The lever consists of a piece oftubing 43 secured to the member 39 by the union 44 and of the extensionpiece 45 which fits into the piece of tubing or socket member 43. Toprovide a lock to hold the rocking member in its supporting position, aT union 46 is secured to the frame member 35 and secured to the T is alength of pipe 47 formed with a slot 48 which receives a pin 49 on asleeve 50 slidably arranged on the member 47. The sleeve 50, when movedto its extended position, slides over the end of a piece of pipe 5lsecured to the memberA 52 of union 44. It will be understood that thepipes 47 and 5l are brought into alinement when the rocking member isturned to its supporting position. As a means for limiting the forwardmovement of the rocking member, the unions 37 are formed with thenotches 53 into which project lugs 54 formed on collars 55 which areadjustably secured to the sleeves 40 by means of set screws 56. The formof truck jack shown in Figs. 7 and 8 is applied to the axle insubstantially the same manner as illustrated in Figs. 3 and 4. When theextension piece 45 and the axle supports are in the position of theextension piece 27 and the axle supports 23 shown in Fig. 3, the bearingdown on the extension piece 45 brings 'the rocking member into uprightposition, that of the full lines in Figs. 2 and 4, which raises the axleand lifts the wheels from the ground. By sliding sleeve 50 over the endof the pipe 51, the rocking member is held in substantially rigidrelationI with the truck frame.

Another modification is shown in Figs. 9 to l1 inclusive. The truckconsists "olf-l a plate 52 provided with casters 53. '--Gnfthe plate arebearings 54 for the cross' pi'ece 55 of the rocking member. The cross-piece 55 carries at its extremity the preferably adjustable standards56. The rocking member is operated by means of a lever which preferablyconsists of the socket piece 57 and the removable extension piece 58.Any suitable lock may be provided. I have. shown a latch 59 pivoted tothe plate 52 so that it may be turned over the socket -mem- Y ber 57. 195 In Figs. 12 to 14 inclusive I have shown a modification permittingthe ends of the automobile axle to be raised separately. The truckconsists, in the preferred form shown, of a metal plate 60 provided onthe 100 under side with the casters 61. Each of the standards/62 isscrewed into a socket 63 rigidly connected with a piece of tubing 64which turns in bearings 65, 65. A tubular lever 66 forms a part of therocking mem 105 ber, being preferably cast integrally withfl the socketmember 63. A single extension" piece 67 may be used for rocking bothstandards. In the construction shown the lock consists of an arm 68mounted in a fork 69 110 on one of the bearings 65. The arm is providedwith a tongue 70 extending through a slot 71 in the bearing and a slot72 in the tubular cross piece 64. By forming the under side of the arm68 with a lug 73 a 115 spring 74 holds the arm 68 in either position.

Vhile I have described several different embodiments of my invention, itwill be understood that there might be some change 120 made in theforms, constructions and arrangements employed without departure from myinvention. Therefore I do not limit myself to the particulars shownexcept so far as the same are made specifically 125 limitations oncertain of the claims herein.

I claim:

1. In a jack truck the combination with a truck-structure of a rockingmember comprising a pair of axle-supports adapted to 130 engage oppositeends of a vehicle axle and a cross-piece rigidly connecting saidaxlesupports, said rocking member being revolubly mounted on the truckso that the axle-supports When applied to the axle may stand oblique tothe vertical, means for turning said rocking member so as to cause saidaxle-supports to pass through the vertical and assume a positionapproximating the vertical to raise the vehicle, and means for holdingthe rocking member in this position.

2. In a jack truck the combination With a truck-structure of a rockingmember comprising a pair of axle-supports adapted to engage oppositeends of a vehicle axle and a cross-piece rigidly connecting saidaxlesupports, said rocking member being revolubly mounted on the truckso that the axlesupports When applied to the axle may stand oblique tothe vertical, a lever rigid With said rocking member for turning saidrocking member so as to cause said axle-supports to pass through thevertical and assume a positionv approximating the vertical, and meansfor holding said rocking member in this position.

8. In a jack truck the combination With a truck-structure of a rockingmember comprising a pair of axle-supports adapted to engage oppositeends of a vehicle axle and a cross-piece rigidly connecting saidaxlesupports, said rocking member being revolubly mounted on the truckso that the axlesupports when applied to the axle may stand oblique tothe vertical, and means for turning said rocking member so that saidaxlesupports assume a position on the other side of the vertical fromthe irst position but at an angle from the vertical less than the anglemade by the supports in the iirst position, said truck being providedWith means for supporting the rocking member in the second-namedposition.

4. In a jack truck the combination with a truck-structure of a rockingmember comprising a pair of axle-supports adapted to engage oppositeends of a vehicle axle and a cross-piece rigidly connecting saidaxlesupports, said rocking member being revolubly mounted on the truckso that the axlesupports when applied to the axle may stand oblique tothe vertical and a lever rigid with said rocking member for turning saidrocking member so that said axle-supports assume position on the otherside of the vertical from the first-named position but at an angle fromthe vertical less than the angle made by said supports in thefirst-named position, said truck being provided With a member on whichsaid lever bears to support the rocking member in the secondnamedposition.

5. In a ack truck the combination with a truck-structure of a rockingmember comprising a pair of axle-supports adapted to engage oppositeends of a vehicle axle and a cross-piece rigidly connecting saidaxlesupports, said rocking member being revolubly mounted on the truckso that the axlesupports when applied to the axle may stand oblique tothe vertical, means for turning said rocking member so that saidaxle-supports assume a position on the other side of the vertical fromthe rst position but at an angle from the vertical less than the anglemade by the supports in the first position, said truck being providedWith means for supporting the rocking member in the second-namedposition, and a locking device for holding the rocking member againstaccidental displacement from the last-named position.

6. In a jack truck the combination With a truck-structure of a rockingmember comprising a pair of axle-supports adapted to engage oppositeends of a vehicle axle and a cross-piece rigidly connecting saidaxlesupports, said rocking member being revolubly mounted on the truckso that the axlesupports when applied to the axle may stand oblique tothe vertical, stops to limit the angular movement of the rocking memberin the direction away from the vertical,

and means for turning said rocking member so as to cause saidaxle-supports to assume a position on the opposite side of the vertical,said truck-structure being provided with means for holding the rockingmember on this side of the vertical at an angle less than the anglewhich it assumes in the first-named position.

7. In a ack truck the combination with a truck-structure provided withrollers at its corners, of a rocking member revolubly mounted on thetruck-structure and comprising a pair of axle-supports adapted to engageopposite ends of a vehicle axle, a cross-piece rigidly connecting theaxle-supports and a lever rigidly connected with said cross-piece, stopsfor limiting the angular movement of the rocking member in one directionWhich permit the axle-supports to assume a position oblique to thevertical, and means against which said lever bears When said rockingmember is rocked through the vertical in the other direction whichsupports the same With the axle-supports at an angle to the verticalless than the angle which they assume in the firstnamed position.

ROBERT MCCALMONT.

Witnesses:

O. L. BLEAKLEY, RALPH ALEXANDER.

